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Procedure price report · Laboratory - Chemistry and Hematology

Amniotic fluid protein test for ruptured membranes

CPT 84112the billing code this page is about

Tests fluid collected from the vagina and cervix for proteins that come from amniotic fluid, reported as present or absent; billed once for each specimen tested.

Hospitals typically charge $195 cash for this outpatient procedure — the median across 2,398 hospitals that filed a usable cash price; the average of the middle 60% is $207. Most fall between $111 and $374 (20th–80th percentile).

Hospitals
2,398
States
50
Filings dated
Jan 2024 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 25, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 2,398 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$83$119$195$330$500

The most expensive tenth of hospitals charges at least 6.1× what the cheapest tenth charges ($83 vs $500).

How the prices are spread

$64 – $82: 119 hospitals$64$82 – $105: 186 hospitals$105 – $134: 307 hospitals$105$134 – $170: 307 hospitals$170 – $217: 316 hospitals$170$217 – $277: 279 hospitals$277 – $353: 237 hospitals$277$353 – $451: 208 hospitals$451 – $575: 155 hospitals$451$575 – $733: 46 hospitals$575median $195price bands are equal on a log scale
Hospitals per price band (2,160 of 2,398 — the bands cover the 5th to 95th percentile)
FromToHospitals
$64$82119
$82$105186
$105$134307
$134$170307
$170$217316
$217$277279
$277$353237
$353$451208
$451$575155
$575$73346

By state

The median cash price in each state, against the national median of $195.

Alaska: median $203 across 15 hospitalsAK$203Maine: median $216 across 17 hospitalsME$216Vermont: 7 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: median $340 across 18 hospitalsNH$340Washington: median $218 across 61 hospitalsWA$218Idaho: median $226 across 21 hospitalsID$226Montana: median $211 across 22 hospitalsMT$211North Dakota: median $374 across 11 hospitalsND$374Minnesota: median $166 across 87 hospitalsMN$166Illinois: median $192 across 94 hospitalsIL$192Wisconsin: median $198 across 91 hospitalsWI$198Michigan: median $193 across 73 hospitalsMI$193New York: median $172 across 72 hospitalsNY$172Massachusetts: median $266 across 37 hospitalsMA$266Oregon: median $204 across 44 hospitalsOR$204Nevada: median $234 across 13 hospitalsNV$234Wyoming: median $196 across 15 hospitalsWY$196South Dakota: median $252 across 15 hospitalsSD$252Iowa: median $217 across 60 hospitalsIA$217Indiana: median $183 across 82 hospitalsIN$183Ohio: median $237 across 96 hospitalsOH$237Pennsylvania: median $192 across 75 hospitalsPA$192New Jersey: median $108 across 44 hospitalsNJ$108Connecticut: median $203 across 13 hospitalsCT$203Rhode Island: 3 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $342 across 127 hospitalsCA$342Utah: median $435 across 39 hospitalsUT$435Colorado: median $283 across 56 hospitalsCO$283Nebraska: median $220 across 48 hospitalsNE$220Missouri: median $170 across 56 hospitalsMO$170Kentucky: median $137 across 48 hospitalsKY$137West Virginia: median $205 across 21 hospitalsWV$205Virginia: median $190 across 56 hospitalsVA$190Maryland: median $120 across 25 hospitalsMD$120Delaware: 3 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $166 across 31 hospitalsAZ$166New Mexico: median $134 across 23 hospitalsNM$134Kansas: median $163 across 46 hospitalsKS$163Arkansas: median $71 across 25 hospitalsAR$71Tennessee: median $113 across 65 hospitalsTN$113North Carolina: median $150 across 76 hospitalsNC$150South Carolina: median $189 across 42 hospitalsSC$189Oklahoma: median $124 across 50 hospitalsOK$124Louisiana: median $109 across 33 hospitalsLA$109Mississippi: median $65 across 27 hospitalsMS$65Alabama: median $229 across 29 hospitalsAL$229Georgia: median $126 across 75 hospitalsGA$126Hawaii: median $137 across 14 hospitalsHI$137Texas: median $280 across 184 hospitalsTX$280Florida: median $281 across 113 hospitalsFL$281
Cash price by state, most expensive first. National median $195. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Utah UT39$435+123%$208 – $512
North Dakota ND11$374+92%$301 – $515
California CA127$342+75%$164 – $557
New Hampshire NH18$340+74%$143 – $718
Colorado CO56$283+45%$158 – $421
Florida FL113$281+44%$123 – $494
Texas TX184$280+43%$110 – $492
Massachusetts MA37$266+36%$201 – $462
South Dakota SD15$252+29%$122 – $314
Ohio OH96$237+22%$133 – $382
Nevada NV13$234+20%$142 – $412
Alabama AL29$229+17%$98 – $478
Idaho ID21$226+16%$146 – $437
Nebraska NE48$220+13%$148 – $286
Washington WA61$218+12%$107 – $356
Iowa IA60$217+11%$128 – $291
Maine ME17$216+11%$88 – $254
Montana MT22$211+8%$92 – $379
West Virginia WV21$205+5%$154 – $328
Oregon OR44$204+5%$139 – $298
Connecticut CT13$203+4%$124 – $417
Alaska AK15$203+4%$126 – $348
Wisconsin WI91$198+2%$135 – $443
Wyoming WY15$196+1%$124 – $318
Michigan MI73$193−1%$127 – $342
Illinois IL94$192−2%$102 – $310
Pennsylvania PA75$192−2%$94 – $541
Virginia VA56$190−3%$65 – $385
South Carolina SC42$189−3%$117 – $269
Indiana IN82$183−6%$100 – $273
New York NY72$172−12%$98 – $295
Missouri MO56$170−13%$121 – $247
Minnesota MN87$166−15%$93 – $207
Arizona AZ31$166−15%$111 – $542
Kansas KS46$163−16%$105 – $232
North Carolina NC76$150−23%$112 – $251
Kentucky KY48$137−30%$99 – $294
Hawaii HI14$137−30%$103 – $593
New Mexico NM23$134−31%$69 – $269
Georgia GA75$126−35%$92 – $220
Oklahoma OK50$124−36%$114 – $181
Maryland MD25$120−39%$94 – $141
Tennessee TN65$113−42%$70 – $236
Louisiana LA33$109−44%$64 – $235
New Jersey NJ44$108−45%$98 – $154
Arkansas AR25$71−64%$63 – $187
Mississippi MS27$65−67%$60 – $88
Vermont VT7not enough hospitals filed a usable price
Delaware DE3not enough hospitals filed a usable price
Rhode Island RI3not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $195.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,867$192$107 – $391
Children’s16fewer than 20 hospitals
Critical access508$198$124 – $319
Ownership
For-profit324$246$120 – $542
Government379$183$113 – $283
Non-profit1,688$191$108 – $368
System affiliation
Part of a system2,032$198$111 – $389
Independent366$181$109 – $292

Cash price vs list price

Median list price (chargemaster)$326
Median cash price$195
Cash as a share of list, median hospital61%

At the typical hospital, asking for the cash price cuts the list price by about 39%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

The same procedure, inpatient

1,669 hospitals filed a usable inpatient cash price for this code. The median is $201 and the average of the middle 60% is $214; most fall between $113 and $391.

Cash price percentiles, inpatient, across 1,669 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$81$122$201$343$509

The most expensive tenth of hospitals charges at least 6.3× what the cheapest tenth charges ($81 vs $509).

Of the 1,839 hospitals that filed this code inpatient, 1,669 gave a usable cash price; 96 carried a plausibility flag, 1 filed a number their own filing marks as not a price, 0 gave an estimate, and 73 a list price only.

How complete is this

2,398 of the 3,956 hospitals with a price file in our corpus (61%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,612 hospitals that filed this code at all gave us
Usable cash price — counted2,398
Cash price carrying a plausibility flag — shown on the compare tool, excluded here126
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded86
Hospitals that filed this code2,612

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between September 4, 2026 and September 25, 2026; the figures were computed September 25, 2026 from filings loaded through September 25, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as HC Amnisure Rom.

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Amniotic fluid protein test for ruptured membranes (CPT 84112) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84112-amniotic-fluid-protein-test-for-ruptured-membranes